Light_2 (1)

Light_2 (1) - Light, Scattering, & Polarization What is...

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Light, Scattering, & Polarization
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What is a molecule? Two views: atoms connected by springy sticks Atoms surrounded by electron cloud QuickTimeª and a decompressor are needed to see this pi From http://www.windows.ucar.edu/ Electron cloud acts like springy stick!
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Light hitting a molecule Electron cloud fills most of molecule Light hits electrons: shakes them! Easier to shake them if you shake them at the right rate: for typical molecules, this corresponds to UV light The bluer the light (closer to UV), the better the shaking [Rayleigh scattering] QuickTimeª and a decompressor are needed to see this picture. QuickTimeª and a decompressor are needed to see this picture.
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Why is the sky blue? Blue light is more likely to be scattered, so indirect light should be more blue Red light is less likely to be scattered, so transmitted light is more likely to be red QuickTimeª and a decompressor are needed to see this picture.
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Light_2 (1) - Light, Scattering, & Polarization What is...

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